Schwab P M,Barnes D K,Sheaffer C C.The relationship between field wilen injury and fall growth score for 251 alfalfa cultivates[J].Crop S ci,1996,36:418-426.
[4]
孙启中,王育青.关于苜蓿抗寒性的几个问题[J].牧草与饲料,1992 ,7(2):31-33.
[5]
Mckersie B D.superoxide dismutase enhances tolerance of fre ezing stress in transgenic alfalfa[J].Plant Physical,1993,103:1155-1163.
[6]
Sulc R M,Albrecht K A.Leakage of cutracellular substances alfalf a roots at various subfreezing temperatures[J].Crop Sci,1991,31:1575-1578.
Levitt J.Responses of plants to environmental stress[M].New Y ork:Plenum Publishing,1980.490-497.
[9]
闵继淳.紫花苜蓿秋、冬播种的初步研究[J].草地与饲料,1989,3( 4):21-23.
[10]
Schwab P M,Barner D K.Factor affecting a laboratory evaluation o f alfalfa cold tolerance[J].Crop Sci,1996,36:318-324.
[11]
户利坤.不同播种期苜蓿越冬性能的研究[J].草地与饲料,1990,5( 4):66-67.
[12]
Sulc R M,Alboecht K A,Duke S H.Leakage of intracellular subs tances as an indicator of freezing injury in alfalfa[J].Crop Sci,1991,31:430- 435.
[13]
Schwab P M.Field and laboratory methodologies for measuring win ter survival and cold tolerance in alfalfa[A].M S Thesis University of Minneso ta[C].New York:Elseviser Science Publishing,1993.36-47.
[14]
Green D G.Solable sagas changes occurring during cold hardening of alfalfa[J].Canadian Journal of Plant Sci,1983,63(2):415-420.